Samson 3222/2780 series, Монтаж и эксплуатация

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28 EB 5866 EN
Mounting and start-up
5.2.2 Configuring the actuator
The electric actuator versions with positioner
as well as electric actuators with process
controllers can be adapted to the control
task.
Configure the actuator as described in the
associated actuator documentation.
For electric control valves with positioner, an
initialization needs to be performed after the
initial start-up (see associated documenta-
tion).
5.3 Quick check
SAMSON valves are delivered ready for
use. To test the valve's ability to function, the
following quick checks can be performed:
Travel motion
The movement of the actuator stem must be
linear and smooth.
Î
Open and close the valve, observing the
movement of the actuator stem.
Î
Apply the maximum and minimum con-
trol signals to check the end positions of
the valve.
Î
Check the travel reading at the travel in-
dicator scale.
Fail-safe position with pneumatic actuators
Î
Shut off the signal pressure line.
Î
Check whether the valve moves to the
fail-safe position.
Fail-safe action for electric actuators and
electric actuators with process controllers
with fail-safe action
Î
Switch off the power supply.
Î
Check whether the valve moves to the
fail-safe position.
Pressure test
During the pressure test, make sure the fol-
lowing conditions are met:
− Retract the plug stem to open the valve.
− Observe the maximum permissible pres-
sure for valve and plant.
The plant engineering company is responsi-
ble for performing the pressure test.
SAMSON's After-sales Service department
can support you to plan and perform a pres-
sure test for your plant.
Note
Note